I have played all three of those and have added them to the TM section, because they're quite good, not because any of them came out recently (even the Gamehouse bundle has been out for some time now).

Here's my short review (for all three games):

The first game, Turbo Pizza, was among the first TMs I've ever played and unlike the Diner Dash series, I found it quite managable. You do chains with this game, too, but the whole placing issue is out of the loop. In each of the three games, you're serving a speciality (pizza, sub or taco) plus a few other things (soft drinks, ice cream, cookies, coffee, popcorn). The customers come in a huge variety and have different levels of patience. After a while, you will know which ones to serve first and which ones to keep waiting. Levels get more difficult as you proceed, with more different customers, more different food and more different demands (like toppings). Between levels, you can buy upgrades from the shop, both for the shop and for your characters. This way, Rebecca can move faster and Robert will make pizza, subs or tacos like there's no tomorrow. You can also upgrade most stations (soft drinks etc.), to get more money per sale.
The later games (Turbo Subs and Turbo Fiesta) also have mini-games between the levels (mostly HOG scenes in the second game, other types as well in the third one).
The graphics of the games are a bit cartoon-y and quit funny (I always wondered about how the customers got onto and off the driving subway wagon in the second game), the customers are easy to identify, so you know exaclty whom you're dealing with. The places where Rebecca opens up her shops are sometimes quite strange, but the locations always look good.
As always, no comment on sounds.

The verdict: The games are a good start into the TM genre, but also interesting for players who have played their share of TM games already.